Corn and callus remover



May 21, 1929'.

R. c. v JACKSON CORN M'D CALLUS REMOVER Filed March 15, 1927 v gnwntoufiazhfykfackson Patented May 21, 1929.

QUNITEDSTATES PATENT OFFICE.

REUBEN CUDAHY JACKSON, or KANSAS CITY, MISSOURL CORN AND CALLUS REMOVER.

Application filed March 15, 1927. Serial No. 175,551.

This invention relates to implements of the class employed by those who suffer from corns, calli and like (leforn'iiti-es to trim the same at intervals, and it is my main objectto provide a novel device for thispurpose which may be used safely and efiiciently.

A further object of the invention :is to embody in one implementmeans for trimming deformities of convex, flat or concave form.

A still further object of theinvention is to so design the novel implement that its act-ion will be of a skinning or peeling nature, avoiding the danger ofa deep cut.

Another objectof the invention is to design it with a unique blade holder, which imparts-peculiar characteristics to the cut-- ting blade of the device.

A final, but'neve'rtheless important ob ect and us by the novice and for inexpensive manufacture. V

With the above objects in view and any others that may suggest themselves from the specification and claims to follow, a better understanding of the invention may be gained by reference to the accompanying to keep from cutting into the live tissue or flesh under the deformity. Implements simulating the common safetv razor have been used with some degree of safety, but such devices, not; being designed to suit the particular work, have proved inefficient, since their work is not uniform and live tissue is penetrated, causing pain and danger of infect-ion. My invention has been designed to overcome the above difliculties and prove a useful and efficient implement which fulfills the objects contemplated and outlined above.

In the drawing, it will be noted that the implement suggests the general form of a of the invention is to construct thedevice' of few and simple parts, for easy handling 19, respectively.

is afperspectivc' view of the blade typical safety razor, which form being familiar to anyone, lends itself more readily to handling by the novice. The handle is indicated at 10, the same having a tapped bore 11 to receive the screw 12' of the base or head 13. Above the base, the screw is adapted to receive one or more shims 14', the blade 15 and an arched clamping plate 16 for the latter, .these intermediate parts being fast to the base 13 by the'foot 1O handle 10 as the latter is advanced upon the screw 12. The parts 14, 15 and 16 are, of

pressed course, made with registering perforations 17; and the action of assembling or dismantling the implement is similar to that of the common safety razor and therefore a simple matter for anyone.

The base 12-3 is formed in the nature of a rectangular frame with sides :13 and ends or of the terminal cross bars 18 and 19. The medial portion of the base is spaced from these bars is generally flat as indicated at 1'3 while its inner surface is con-vexsee 18toward the cross bar 18"and concave19"toward the cross bar 19. In harmony with'this formation, the under side of the bar 18 is arched or concaved as indicated at 18",-while that of the bar 19 is bulged or convexecl, as clearly shown at 19*, in; Figuref3. The respective curvatures of the cross bars are by transverse slots 20, and its outer surface continued or extended across the under side of the base 13, so thatportions' t hereof depart fromv the plane surface thereof, such extendedportions beingindi'cated at-18 and The medi -l portion of the 14, which are of a size equal to the said portion. Next comes the blade 15,.which is'of' greater length, whereby to project its edges base 13 is first adapted to receiveone or more of the shims 15 into the slots 20. The clamping plate 16 follows, and finally the foot 10* ofthe" J handle 10 bears on the clamping plate -,to press and fix the blade and the shims firmly inthe base when the handle is screwed down.

It should be noted now that, while the clamping plate is generally of arched and reinforced formation to fully transmlt the pressure it receives, it is at the same time shaped to fit the double curvature of the medial base portion. Consequently, the con vexit-y indicated at 18 in Figure 2 is reallyv operative as a concavity on theunder side of theplate, which conforms to'the convexity 18 below; and so withthe apparent 0011 ,blade from. the surface shaved.

cavity 19", whose reverse convexity fits the corresponding concavity 19 below.

It is now obvious that, with the blade and shims clamped in the holder, such blade and shims will receive a double curvature in harmony with the design of the component parts of the holder, the latter serving as a die or form in this respect. The resulting form of the blade-if the latter could be seenwould be as in Figure 5, so that the under, or working surface of the implement would be at one end'concave and with a concave blade, and at the other end convex and with a convex blade.

The base 18 tapers upwardly toward the ends to place the cross bars 18 and 19 in an elevated position, so that they will be above the blade and form guards for the latter in the manner of the frontal stock of a carpenters plane. Thus, when the implement is applied to a deformity, it is set with the chosen cross bar or guard upon the deformity and gradually lOWGlQCl as strokes are taken in the corresponding cutting direction. The effect will be the removal of a very thin shaving or skin from the deformity with each stroke. The dead tissue of the deformity presents a firm and un-' yielding body to the blade, so that the latter can skin or peel it with facility. The depth of the cut is thus easily under control, as any sluggishness or pulling tendency indicates that a yielding tissue has been reached and further cutting therefore stopped. The elevated position of the guards distinguishes the novel implement from guard devices in safety razors and the like, which are under the blade when in use. The advantage I secure is at once apparent. I use the guard also as a depth guide, while in the case of the safety razor the guard merely raises the Further, my guard is in front of the blade edge to ride upon and protect the deformity before the blade reaches it, while in the case of the safety razor the edge of the blade is foremost, increasing the hazard of cutting and bleeding.

, In imparting the double curvature to the blade, the use of the implement is twofold, viz to trim corns or other protuberant deformities, and to remove calli or deformities of flator ingrown form. The concave end of the implement is accordingly adapted for the protuberant type of deformity, as by following its curvature the trimming is uniform and all the deadtissue is easily and quickly removed. on the other hand, the opposite or convex end of the implement is especially suited for the callus type of deformity, since it takes hold first in the medial and thicker portion of the affected layer, and only trims the outer portions after a suhicient depth has been reached to warrant a uniform surfacing throughout. The trimming is then continued until all the dead tissue has been smoothly removed.

The device does not require adjustment of the blade, as the depth of the cut may be felt and varied as the implement is operated; also, to provide for deep cutting is inadvisable, as the quality and safety of'the out are jeopardized. However, I have provided for the long use of the blade by the boosting thereof with the shims 14. Thus, as the blade shortens with continued use, a shim may be removed from time to time. This lowers the blade and projects its edges to the extent previously occupied.

It is thus seen that my invention provides a handy device which may be used with ease and a high degree of safety, and which is especially designed and suited for the rapid and thorough removal ofcorns, calli and the like. The device is small, compact and devoid of delicate parts, and save for the occasional renewal of the blade should last indefinitely. 1

While I have illustrated and described the novel improvement in the preferred form, it will be seen that the same is capable of many minor changes and refinements, and I therefore wish to claim all such changes and refinements as coming within the scope and spirit of the appended claims.

I claim 1. A device of the character described comprising a handle, a head, a shoe and a double edge blade clamped between said shoe and head, and cooperating concave and convex surfaces on said head and shoe for and shoe for imparting a concave curvature to one edge of said blade, and a convex curvature to the other edge of the blade.

In testimony whereof I afiix my si nature.

DR. n. CUDAI-IY .nlcifsou. 

